Henan malpractice Construction Engineering Testing Co., Ltd. is a professional testing company, is one of the qualification place in Henan Province since the first detection through examination of business. Business in the Pile qualification qualification, the qualification grade steel, a qualified indoor environment, building energy efficiency testing, subject testing, materials testing, glass curtain wall testing, roads and bridges detection, detection of a number of civil air defense projects testing qualification and testing laboratories. (2) solid retention process solids retention methods include packed column retention retention law and media law. ① packed column retention method. With a long 6 ~ 10cm, inner diameter of 3 ~ 5mm of glass or polypropylene plastic tube filled a variety of solid filler. Sampling, the gas sample at a constant flow rate through the packed column, Huixian pile engineering test, because the test substance is absorbed, dissolved or play a role in chemical reactions is retained on the filler, to concentrate the air kind of purpose. Sampling evacuation laboratory, analytical or eluted by bringing a test substance is released from the packed column separated and then analyzed the test. According to the filler retention action principle, Loess Engineering, fillers can be divided into adsorption type, distribution type and reaction type three categories. Adsorptive granular adsorbent packed column (such as activated carbon, silica gel, molecular sieves, porous material) having a large surface area, strong adsorption, Walker pile engineering test center for gas, vapor molecules have a strong adsorption. Surface adsorption, there are two, one is due to intermolecular attraction caused by physical adsorption, the adsorption is weak; the other is due to the residual chemical valence force caused by adsorption, adsorption force is strong. It should be noted that: adsorption capacity, high sampling efficiency, but to desorption difficult. Therefore, the choice of sorbent, it is necessary to consider the efficiency of adsorption, desorption also consider easy. Henan malpractice Construction Engineering Testing Co., Ltd. is a professional testing company, is one of the qualification place in Henan Province since the first detection through examination of business. Business in the Pile qualification qualification, the qualification grade steel, a qualified indoor environment, building energy efficiency testing, subject testing, materials testing, Xinxiang pile engineering test center, glass curtain wall testing, roads and bridges detection, detection of a number of civil air defense projects testing qualification and testing laboratories. (1) The structure of the top roof trusses and steel columns section bearing capacity to meet the requirements; (2) the structure of the top steel column column foot just finished burying pieces do not satisfy the requirements of the pedestal, so that by the bending capacity of the pedestal is reduced; at the top set under the curtain wall is not provided, the bending capacity of the column bottom of their not meet the security requirements of the relevant specification; (3) change the thickness of the tendon length and anchor plates embedded parts negotiate column nor the force meet the requirements of this floor will anchor the tendon at the local larger force. Hebi Pile of Pile Foundation Engineering Testing Center _ _ malpractice detection testing base provided by the Construction Engineering Testing Co., Ltd. Henan malpractice. Henan malpractice Construction Engineering Testing Co., Ltd. (www.hnrsjc.cn) (www.rsgcjc.com) strong, credible, in Zhengzhou, Henan's construction industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead malpractice detection and you hand into the brilliant, for a better future!